/* ==========================================================================
   VILECUT - Core Styling & Design System
   ========================================================================== */

/* Design Tokens & Variables */
:root {
  --bg-app: #060913;
  --bg-panel: rgba(13, 20, 38, 0.7);
  --bg-card: rgba(22, 32, 59, 0.85);
  --bg-control: rgba(10, 15, 30, 0.6);
  --border-glow: rgba(0, 242, 254, 0.15);
  --border-subtle: rgba(255, 255, 255, 0.08);
  
  /* Palette */
  --cyan: #00f2fe;
  --cyan-glow: rgba(0, 242, 254, 0.4);
  --purple: #9b51e0;
  --purple-glow: rgba(155, 81, 224, 0.4);
  --pink: #ff007f;
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --panel-width: 340px;
  
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light / Alternative Theme (High-Contrast Cyberpunk) */
.light-theme {
  --bg-app: #0c0f17;
  --bg-panel: rgba(18, 24, 48, 0.95);
  --bg-card: rgba(29, 39, 74, 0.9);
  --bg-control: rgba(8, 12, 24, 0.8);
  --border-glow: rgba(255, 0, 127, 0.3);
  --border-subtle: rgba(255, 255, 255, 0.15);
  
  --cyan: #ff007f; /* invert accents for contrast swap */
  --cyan-glow: rgba(255, 0, 127, 0.5);
  --purple: #00f2fe;
  --purple-glow: rgba(0, 242, 254, 0.5);
  --text-primary: #ffffff;
  --text-secondary: #cbd5e1;
}

/* Obsidian Crimson (Black/Dark Red/Grey) Theme */
.theme-crimson {
  --bg-app: #080000;
  --bg-panel: rgba(20, 10, 10, 0.85);
  --bg-card: rgba(35, 15, 15, 0.9);
  --bg-control: rgba(15, 5, 5, 0.7);
  --border-glow: rgba(255, 30, 30, 0.2);
  --border-subtle: rgba(255, 255, 255, 0.08);
  
  --cyan: #ff3333;
  --cyan-glow: rgba(255, 51, 51, 0.4);
  --purple: #888888;
  --purple-glow: rgba(136, 136, 136, 0.4);
  --pink: #dd2222;
  --text-primary: #e5e7eb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
}

/* Toxic Matrix (Black/Neon Green) Theme */
.theme-matrix {
  --bg-app: #000500;
  --bg-panel: rgba(0, 15, 0, 0.85);
  --bg-card: rgba(0, 30, 0, 0.9);
  --bg-control: rgba(0, 10, 0, 0.7);
  --border-glow: rgba(0, 255, 70, 0.2);
  --border-subtle: rgba(255, 255, 255, 0.08);
  
  --cyan: #39ff14;
  --cyan-glow: rgba(57, 255, 20, 0.4);
  --purple: #00aa33;
  --purple-glow: rgba(0, 170, 51, 0.4);
  --pink: #39ff14;
  --text-primary: #e0f0e0;
  --text-secondary: #88aa88;
  --text-muted: #446644;
}

/* Frozen Odyssey (Icy Dark Blue) Theme */
.theme-frozen {
  --bg-app: #080f1e;
  --bg-panel: rgba(15, 28, 54, 0.85);
  --bg-card: rgba(25, 42, 78, 0.9);
  --bg-control: rgba(10, 20, 40, 0.7);
  --border-glow: rgba(0, 191, 255, 0.2);
  --border-subtle: rgba(255, 255, 255, 0.08);
  
  --cyan: #00d2ff;
  --cyan-glow: rgba(0, 210, 255, 0.4);
  --purple: #70a6ff;
  --purple-glow: rgba(112, 166, 255, 0.4);
  --pink: #00d2ff;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
}

/* Global Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-subtle) transparent;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

body {
  font-family: var(--font-display);
  background-color: var(--bg-app);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* App Container */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background-image: 
    radial-gradient(at 0% 0%, rgba(155, 81, 224, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(0, 242, 254, 0.12) 0px, transparent 50%);
}

/* Header */
.app-header {
  height: 60px;
  background: rgba(8, 12, 26, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 10;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 24px;
  height: 24px;
}

.glow-cyan {
  filter: drop-shadow(0 0 8px var(--cyan-glow));
  color: var(--cyan);
}

.logo-area h1 {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.version-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  padding: 2px 6px;
  border-radius: 4px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.monitor-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--bg-control);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.monitor-badge .label {
  color: var(--text-secondary);
}

.text-cyan {
  color: var(--cyan);
}

.text-purple {
  color: var(--purple);
}

/* Main Workspace Layout */
.main-layout {
  display: flex;
  flex: 1;
  height: calc(100vh - 60px);
  overflow: hidden;
}

/* Side Panels */
.panel {
  width: var(--panel-width);
  background: var(--bg-panel);
  backdrop-filter: blur(16px);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  z-index: 5;
}

.right-panel {
  border-right: none;
  border-left: 1px solid var(--border-subtle);
}

.scrollable {
  overflow-y: auto;
  padding: 20px;
  gap: 24px;
  display: flex;
  flex-direction: column;
}

.panel-section {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  transition: border-color var(--transition-normal), padding var(--transition-normal), gap var(--transition-normal);
  overflow: hidden;
  flex-shrink: 0;
}

.panel-section:hover {
  border-color: var(--border-glow);
}

.panel-section.collapsed {
  padding-top: 12px;
  padding-bottom: 12px;
  gap: 0;
}

.panel-section-content {
  display: flex;
  flex-direction: column;
  gap: 14px;
  opacity: 1;
  max-height: 900px;
  transition: max-height 0.25s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.panel-section.collapsed .panel-section-content {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
}

.section-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.section-title {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.section-title::after {
  content: "▲";
  font-size: 0.55rem;
  color: var(--text-muted);
  margin-left: 8px;
  transition: transform var(--transition-normal);
  display: inline-block;
}

.panel-section.collapsed .section-title::after {
  transform: rotate(180deg);
}

.section-title i {
  width: 16px;
  height: 16px;
  color: var(--cyan);
}

/* File Upload Zone */
.upload-zone {
  border: 2px dashed var(--border-subtle);
  border-radius: 8px;
  padding: 24px 16px;
  text-align: center;
  cursor: pointer;
  background: var(--bg-control);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.upload-zone:hover {
  border-color: var(--cyan);
  background: rgba(0, 242, 254, 0.03);
  box-shadow: 0 0 12px rgba(0, 242, 254, 0.05);
}

.upload-icon {
  width: 32px;
  height: 32px;
  color: var(--text-secondary);
  transition: transform var(--transition-normal), color var(--transition-normal);
}

.upload-zone:hover .upload-icon {
  transform: translateY(-4px);
  color: var(--cyan);
}

.upload-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.browse-link {
  color: var(--cyan);
  font-weight: 600;
  text-decoration: underline;
}

.upload-subtext {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Images Deck Box */
.images-deck-box {
  background: var(--bg-control);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.deck-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.deck-count strong {
  color: var(--cyan);
}

.deck-items-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-right: 4px;
}

.deck-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.deck-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(0, 242, 254, 0.3);
}

.deck-item.active {
  background: rgba(0, 242, 254, 0.04);
  border-color: var(--cyan);
  box-shadow: 0 0 8px rgba(0, 242, 254, 0.1);
}

.deck-item-thumb {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  object-fit: cover;
  background: #000;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.deck-item-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0; /* allows text truncation */
}

.deck-item-name {
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-primary);
}

.deck-item-dims {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
}

.btn-remove-deck-item {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn-remove-deck-item:hover {
  color: var(--pink);
  background: rgba(255, 0, 127, 0.1);
}

.btn-remove-deck-item i {
  width: 14px;
  height: 14px;
}

/* Mask Graph Preview */
.mask-graph-container {
  background: #040812;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

#mask-graph-canvas {
  width: 100%;
  height: 60px;
  display: block;
}

.graph-x-labels {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Control Elements */
.control-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-group-switch {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-control);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 8px 12px;
  height: 38px;
}

.control-group-switch .switch-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  user-select: none;
  cursor: pointer;
}

.control-group-switch input[type="checkbox"] {
  appearance: none;
  width: 32px;
  height: 16px;
  background: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  position: relative;
  outline: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.control-group-switch input[type="checkbox"]::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: all var(--transition-fast);
}

.control-group-switch input[type="checkbox"]:checked {
  background: rgba(0, 242, 254, 0.1);
  border-color: var(--cyan);
  box-shadow: 0 0 6px var(--cyan-glow);
}

.control-group-switch input[type="checkbox"]:checked::after {
  left: 18px;
  background: var(--cyan);
  box-shadow: 0 0 4px var(--cyan-glow);
}

.control-group label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slider-val {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cyan);
}

/* Sliders */
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-control);
  border-radius: 3px;
  outline: none;
  border: 1px solid var(--border-subtle);
}

input[type="range"]::-webkit-canvas-run-track {
  background: var(--bg-control);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 6px var(--cyan-glow);
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  background: #ffffff;
}

/* Select Wrapper */
.select-wrapper {
  position: relative;
  width: 100%;
}

select {
  width: 100%;
  background: var(--bg-control);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 8px 12px;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  transition: all var(--transition-fast);
}

select:focus, select:hover {
  border-color: var(--cyan);
  box-shadow: 0 0 8px rgba(0, 242, 254, 0.1);
}

.select-wrapper::after {
  content: "▾";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  pointer-events: none;
  font-size: 0.75rem;
}

/* Grids */
.grid-2-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* Buttons */
.btn {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 10px 16px;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
}

.btn-full {
  width: 100%;
}

.btn.primary {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--purple) 100%);
  color: #050510;
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.25);
  font-weight: 700;
}

.btn.primary:hover {
  box-shadow: 0 4px 25px rgba(0, 242, 254, 0.45);
  transform: translateY(-1px);
}

.btn.secondary {
  background: var(--bg-control);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.btn.secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--cyan);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.08);
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none !important;
  border-color: var(--border-subtle) !important;
}

.icon-btn {
  background: var(--bg-control);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  width: 32px;
  height: 32px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 8px var(--cyan-glow);
}

.icon-btn i {
  width: 16px;
  height: 16px;
}

.small-text-btn {
  background: none;
  border: none;
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition-fast);
}

.small-text-btn:hover {
  color: var(--cyan);
}

.small-text-btn i {
  width: 12px;
  height: 12px;
}

/* Divider */
.divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 4px 0;
}

/* Layers Preview Grid */
.layers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  gap: 8px;
  min-height: 72px;
  align-content: start;
}

.layer-thumbnail {
  aspect-ratio: 1;
  background: #000;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.layer-thumbnail:hover {
  border-color: var(--cyan);
  transform: scale(1.05);
}

.layer-thumbnail.active {
  border-color: var(--cyan);
  box-shadow: 0 0 6px var(--cyan-glow);
}

.layer-thumbnail canvas {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.layer-label {
  position: absolute;
  bottom: 2px;
  left: 2px;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  padding: 1px 4px;
  border-radius: 3px;
  pointer-events: none;
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 24px 0;
}

/* Viewport Area */
.viewport-area {
  flex: 1;
  background: #03050a;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px 24px;
  position: relative;
  gap: 16px;
  overflow: hidden;
}

/* Text Input and Font Upload Field Styles */
.text-input-field {
  width: 100%;
  background: var(--bg-control);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 8px 12px;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 0.85rem;
  outline: none;
  transition: all var(--transition-fast);
}
.text-input-field:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 8px rgba(0, 242, 254, 0.1);
}

/* Timeline Layout Styles */
.timeline-area {
  width: 100%;
  max-width: 1000px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  transition: border-color var(--transition-normal);
  z-index: 5;
}
.timeline-area:hover {
  border-color: var(--border-glow);
}
.timeline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 8px;
}
.timeline-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.timeline-title i {
  width: 16px;
  height: 16px;
}
.timeline-title .timecode {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--bg-control);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
  color: var(--cyan);
  margin-left: 8px;
}
.small-btn {
  padding: 4px 10px;
  font-size: 0.75rem;
  height: 28px;
}
.timeline-nav-btn {
  background: var(--bg-control);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 22px;
  height: 22px;
  border-radius: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.timeline-nav-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 6px var(--cyan-glow);
}
.timeline-nav-btn i {
  width: 12px;
  height: 12px;
  color: var(--cyan);
}
.small-reset-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px;
  border-radius: 3px;
  transition: all var(--transition-fast);
}
.small-reset-btn:hover {
  color: var(--cyan);
  background: rgba(0, 242, 254, 0.1);
}
.small-reset-btn i {
  width: 10px;
  height: 10px;
  color: var(--cyan);
}
.timeline-duration-control {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: rgba(8, 12, 24, 0.45);
  backdrop-filter: blur(4px);
  padding: 3px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  height: 28px;
  box-sizing: border-box;
  transition: opacity var(--transition-fast), border-color var(--transition-fast);
}
.timeline-duration-control:hover {
  border-color: rgba(0, 242, 254, 0.25);
}
.timeline-duration-control.disabled {
  opacity: 0.4;
  pointer-events: none;
}
.timeline-duration-control label {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  cursor: pointer;
  letter-spacing: 0.5px;
  margin: 0;
  user-select: none;
}
.timeline-duration-control input[type="range"] {
  width: 80px;
  height: 4px;
  padding: 0;
  cursor: pointer;
  background: var(--bg-control);
  border-radius: 2px;
  border: none;
}
.timeline-duration-control span {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--cyan) !important;
  min-width: 24px;
  text-align: right;
  user-select: none;
}
.timeline-body-wrapper {
  flex: 1;
  overflow-x: auto;
  overflow-y: hidden;
  position: relative;
  min-height: 85px;
}
.timeline-tracks-container {
  position: relative;
  width: 100%;
  min-width: 700px; /* Minimum horizontal density scale */
  height: 100%;
  box-sizing: border-box;
  overflow: hidden;
}
.timeline-ruler {
  height: 20px;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  user-select: none;
  cursor: pointer;
  box-sizing: border-box;
}
.ruler-tick {
  position: absolute;
  bottom: 0;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-muted);
}
.ruler-tick::before {
  content: "";
  width: 1px;
  height: 5px;
  background: var(--border-subtle);
  margin-bottom: 2px;
}
.ruler-tick.major::before {
  height: 9px;
  background: var(--text-secondary);
}
.timeline-tracks {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 6px;
  min-height: 55px;
  box-sizing: border-box;
  overflow: hidden; /* Prevent overflowing blocks from stretching timeline scroll width */
}
.timeline-track-row {
  height: 24px;
  background: rgba(255, 255, 255, 0.01);
  border-radius: 4px;
  position: relative;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.02);
  width: 100%;
}
.timeline-track-row:hover {
  background: rgba(255, 255, 255, 0.02);
}
.timeline-block {
  position: absolute;
  height: 18px;
  top: 3px;
  background: linear-gradient(90deg, rgba(0, 242, 254, 0.15) 0%, rgba(155, 81, 224, 0.15) 100%);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: 4px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 10px;
  cursor: grab;
  user-select: none;
  box-sizing: border-box;
  font-weight: 500;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.time-sig {
  opacity: 0.6;
  font-size: 0.85em;
  font-weight: 400;
  margin: 0 4px;
  pointer-events: none;
}
.timeline-block:active {
  cursor: grabbing;
}
.timeline-block.selected {
  background: linear-gradient(90deg, rgba(0, 242, 254, 0.35) 0%, rgba(155, 81, 224, 0.35) 100%);
  border-color: var(--cyan);
  color: var(--text-primary);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.25);
}
.timeline-block.audio-block {
  background: linear-gradient(90deg, rgba(155, 81, 224, 0.25) 0%, rgba(255, 0, 127, 0.2) 100%);
  border: 1px solid rgba(155, 81, 224, 0.5);
}
.timeline-block.audio-block.selected {
  background: linear-gradient(90deg, rgba(155, 81, 224, 0.4) 0%, rgba(255, 0, 127, 0.35) 100%);
  border-color: var(--pink);
  color: var(--text-primary);
  box-shadow: 0 0 10px rgba(255, 0, 127, 0.35);
}
.timeline-block.graphic-block {
  background: linear-gradient(90deg, rgba(0, 242, 254, 0.15) 0%, rgba(0, 255, 127, 0.15) 100%);
  border: 1px solid rgba(0, 255, 127, 0.3);
}
.timeline-block.graphic-block.selected {
  background: linear-gradient(90deg, rgba(0, 242, 254, 0.3) 0%, rgba(0, 255, 127, 0.3) 100%);
  border-color: #00ff7f;
  color: var(--text-primary);
  box-shadow: 0 0 10px rgba(0, 255, 127, 0.25);
}
.timeline-block span {
  position: relative;
  z-index: 1;
  pointer-events: none;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}
.audio-waveform-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}
.timeline-block-handle {
  position: absolute;
  top: 0;
  width: 6px;
  height: 100%;
  cursor: ew-resize;
  background: transparent;
  transition: background var(--transition-fast);
}
.timeline-block-handle.left {
  left: 0;
  border-top-left-radius: 3px;
  border-bottom-left-radius: 3px;
}
.timeline-block-handle.right {
  right: 0;
  border-top-right-radius: 3px;
  border-bottom-right-radius: 3px;
}
.timeline-block-handle:hover {
  background: rgba(0, 242, 254, 0.8);
}
.timeline-playhead {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--pink);
  box-shadow: 0 0 8px var(--pink);
  pointer-events: none;
  z-index: 10;
  transform: translateX(-50%);
  left: 0;
}


/* Composition Grid Pattern Background */
.viewport-area::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.canvas-container {
  position: relative;
  max-width: 100%;
  max-height: calc(100% - 170px);
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  aspect-ratio: 16/9; /* default aspect ratio, will be responsive */
  width: 100%;
  max-width: 1000px;
}

.canvas-container.composition-grid::after {
  content: "";
  position: absolute;
  inset: 0;
  border-left: 1px dashed rgba(255,255,255,0.15);
  border-right: 1px dashed rgba(255,255,255,0.15);
  box-shadow: 
    inset 0 0 0 1px rgba(255,255,255,0.05),
    0 -50% 0 0 rgba(255,255,255,0.15) /* horizontal cross */
  ;
  pointer-events: none;
  background-image: 
    linear-gradient(rgba(255,255,255,0.15) 33.3%, transparent 33.3%, transparent 66.6%, rgba(255,255,255,0.15) 66.6%),
    linear-gradient(90deg, rgba(255,255,255,0.15) 33.3%, transparent 33.3%, transparent 66.6%, rgba(255,255,255,0.15) 66.6%);
  background-size: 100% 100%;
}

#main-canvas {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}

/* Canvas Loader */
.canvas-loader {
  position: absolute;
  inset: 0;
  background: rgba(3, 5, 10, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 3;
}

.canvas-loader span {
  font-size: 0.85rem;
  letter-spacing: 1px;
  color: var(--cyan);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(0, 242, 254, 0.1);
  border-radius: 50%;
  border-top-color: var(--cyan);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Glitch Flash Overlay */
.glitch-flash-overlay {
  position: absolute;
  inset: 0;
  background: white;
  opacity: 0;
  pointer-events: none;
  z-index: 2;
  mix-blend-mode: color-dodge;
  transition: opacity 0.05s ease-out;
}

.glitch-flash-overlay.active {
  opacity: 0.35;
}

/* Viewport Toolbar */
.viewport-controls {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(8, 12, 24, 0.8);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  display: flex;
  align-items: center;
  padding: 6px;
  gap: 6px;
  z-index: 4;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.canvas-container:hover .viewport-controls {
  opacity: 1;
  pointer-events: auto;
}


.viewport-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.viewport-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.viewport-btn.active {
  background: rgba(0, 242, 254, 0.1);
  color: var(--cyan);
  border: 1px solid rgba(0, 242, 254, 0.2);
}

.viewport-btn.highlight {
  color: var(--pink);
}

.viewport-btn.highlight:hover {
  background: rgba(255, 0, 127, 0.1);
  box-shadow: 0 0 8px rgba(255, 0, 127, 0.3);
}

.control-divider {
  width: 1px;
  height: 20px;
  background: var(--border-subtle);
  margin: 0 4px;
}

/* Export Progress Modal Overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 6, 12, 0.85);
  backdrop-filter: blur(16px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay:not(.hidden) {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  box-shadow: 0 0 50px rgba(0, 242, 254, 0.15);
  border-radius: 16px;
  padding: 32px;
  max-width: 480px;
  width: 90%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
}

.modal-icon {
  width: 48px;
  height: 48px;
}

.modal-card h3 {
  font-size: 1.2rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.modal-description {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.progress-bar-container {
  width: 100%;
  height: 8px;
  background: var(--bg-control);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  margin-top: 8px;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--purple) 100%);
  box-shadow: 0 0 8px var(--cyan-glow);
  width: 0%;
  transition: width 0.1s ease-out;
}

.export-stats {
  display: flex;
  justify-content: space-between;
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Hidden Utility */
.hidden {
  display: none !important;
}

/* Export styling special highlights */
.export-section {
  border-color: rgba(0, 242, 254, 0.25);
  background: linear-gradient(180deg, var(--bg-card) 0%, rgba(0, 242, 254, 0.02) 100%);
}

.text-cyan {
  color: var(--cyan) !important;
}

/* Layer Inspector Styles */
.inspector-preview-container {
  position: relative;
  width: 100%;
  height: 160px;
  background-color: #040812;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.inspector-preview-container canvas {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  z-index: 1;
}

/* Custom transparency grid backgrounds */
.bg-checkerboard {
  background-image: 
    linear-gradient(45deg, #111a30 25%, transparent 25%), 
    linear-gradient(-45deg, #111a30 25%, transparent 25%), 
    linear-gradient(45deg, transparent 75%, #111a30 75%), 
    linear-gradient(-45deg, transparent 75%, #111a30 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
  background-color: #080f24;
}

.bg-black {
  background-color: #000000 !important;
  background-image: none !important;
}

.bg-white {
  background-color: #ffffff !important;
  background-image: none !important;
}

.bg-magenta {
  background-color: #ff00ff !important;
  background-image: none !important;
}

.inspector-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 2px 6px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--cyan);
  font-weight: bold;
  pointer-events: none;
  z-index: 2;
}

.inspector-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 4px;
}

.inspector-stat {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.inspector-bg-selectors {
  display: flex;
  gap: 6px;
}

.inspector-bg-selectors .bg-btn {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  cursor: pointer;
  background: transparent;
  outline: none;
  border: 1px solid var(--border-subtle);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.inspector-bg-selectors .bg-btn:hover {
  transform: scale(1.2);
}

.inspector-bg-selectors .bg-btn.active {
  border-color: var(--cyan);
  box-shadow: 0 0 6px var(--cyan-glow);
}

.inspector-bg-selectors .bg-btn[data-bg="checkerboard"] {
  background-image: 
    linear-gradient(45deg, #777 25%, transparent 25%), 
    linear-gradient(-45deg, #777 25%, transparent 25%), 
    linear-gradient(45deg, transparent 75%, #777 75%), 
    linear-gradient(-45deg, transparent 75%, #777 75%);
  background-size: 4px 4px;
  background-position: 0 0, 0 2px, 2px -2px, -2px 0px;
  background-color: #222;
}

.inspector-bg-selectors .bg-btn.bg-black {
  background-color: #000;
}

.inspector-bg-selectors .bg-btn.bg-white {
  background-color: #fff;
}

.inspector-bg-selectors .bg-btn.bg-magenta {
  background-color: #ff00ff;
}

/* Responsiveness tweaks for smaller monitors */
@media (max-width: 1200px) {
  .main-layout {
    flex-wrap: wrap;
    overflow-y: auto;
  }
  .panel {
    width: 100%;
    height: auto;
    border: none;
    border-bottom: 1px solid var(--border-subtle);
  }
  .viewport-area {
    width: 100%;
    min-height: 500px;
    order: -1;
  }
}

/* Theme Dropdown Selector Styles */
.theme-select-container {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-control);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: 6px;
  transition: border-color var(--transition-fast);
}

.theme-select-container:hover {
  border-color: var(--cyan);
}

.theme-select-icon {
  width: 14px;
  height: 14px;
  color: var(--cyan);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-dropdown {
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  outline: none;
  padding-right: 4px;
}

.theme-dropdown option {
  background: #0d1426;
  color: var(--text-primary);
  font-family: var(--font-display);
}

.btn-header {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  background: var(--bg-control);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: 6px;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.btn-header:hover {
  border-color: var(--cyan);
  background: rgba(255, 255, 255, 0.05);
}

.checkbox-list-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 10px;
  margin-top: 6px;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.checkbox-row input[type="checkbox"] {
  accent-color: var(--cyan);
  cursor: pointer;
  width: 14px;
  height: 14px;
}

.checkbox-row label {
  cursor: pointer;
  user-select: none;
}

.checkbox-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.checkbox-group input[type="checkbox"] {
  accent-color: var(--cyan);
  cursor: pointer;
  width: 14px;
  height: 14px;
}